# Construction Screws Koelner/Rawlplug 4.0x50 mm, partial thread, countersunk head, pack of 18 (5 blisters)

**URL:** https://aio.lv/en/product--koelnerrawlplug-r-s3-ptx-40050--12286110
**Data updated:** 2026-04-26 18:47 (EEST)
**Category:** Tool kits and accessories
**Manufacturer:** Koelner/Rawlplug
**Manufacturer code:** R-S3-PTX-40050
**EAN:** 5906675481920
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 11.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--koelnerrawlplug-r-s3-ptx-40050--12286110

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Set of Koelner/Rawlplug construction screws 4.0x50 mm with partial (incomplete) thread and countersunk (conical) head. Pack contains 18 screws supplied as five blister packs. Designed for joining wooden elements and construction assemblies where a countersunk finish is required; suitable for general fastening tasks in carpentry and light construction.

## Long description

Set of Koelner/Rawlplug construction screws 4.0x50 mm with partial thread and countersunk head, supplied as a pack of 18 screws divided into five blister packs. These screws are intended for joining wooden elements and light structural components where a flush, conical head finish is required. The 4.0 mm shank diameter and 50 mm length provide a balance between holding power and ease of installation for typical carpentry and light construction tasks.
Advantages
The partial-thread design allows secure clamping of two wooden elements while reducing the risk of over-drilling or splitting the material. The countersunk (conical) head sits flush with or below the work surface when properly driven, giving a neat finish and accommodating screw-top cover caps or filling. Packaged in five small blisters, the set supports controlled consumption and straightforward storage, reducing waste and keeping the fasteners separated for different tasks.
Suitable for
Joining timber-to-timber connections in carpentry and furniture assembly
Fixing battens, frames, and rails where a flush head is preferred
General light-construction fastening tasks in renovations and DIY projects
When it may not be suitable
These screws are intended primarily for wood and light construction uses. They are not designed for heavy structural loads or applications requiring full-thread fasteners for maximum withdrawal resistance. For use in metal-to-metal connections, masonry, or where specific corrosion resistance is required, alternative fasteners or additional anchors should be selected.
Key specifications
Diameter: 4.0 mm
Length: 50 mm
Thread type: partial (incomplete) thread
Head type: countersunk (conical) head
Quantity: 18 screws per pack, supplied in five blister packs
How to use
Pre-drill pilot holes appropriate to the wood type and screw diameter to reduce splitting in hardwoods; use a suitable countersink if a fully flush finish is required. Drive the screw with a compatible screwdriver bit or drill/driver set at moderate speed to avoid damaging the head or the material. Tighten until the head is flush with the surface or just below, taking care not to over-torque which can strip the wood or the screw seating.
What to consider before purchase
Check material compatibility — optimized for wood and light structural timber, not for masonry or metal without appropriate anchors
Confirm the required length and diameter for sufficient penetration and holding power in your application
Consider corrosion requirements for outdoor or humid environments and choose coated or stainless alternatives if needed
Usage recommendations
For best results, match the pilot hole diameter to the screw core for the wood species being used, and employ a proper countersink for a clean, flush finish. Store blister packs in a dry place and use screws from one blister at a time to maintain organization on job sites.

## FAQ

### How much does the Construction Screws Koelner/Rawlplug 4.0x50 mm cost, and is it available for purchase?

The price is 13.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 305 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Koelner/Rawlplug products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Koelner/Rawlplug service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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